David l



D. L. LATOURETTE.

Paint Mill Patented June 13, 1854.

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UNITED sTATE-s PATENT orrion.

DAVID L. LATOURETTE, oF sT. Louis, MISSOURI.

MILL.

Specification of Letters Patent No. 11,075, dated June 13, 1854.

To all whom it may concern Be it known that 1, DAVID LoUIs LATOUR- ETTE, of the city of St. Louis and the State of Missouri, have inventednew and useful Improvements in MillsAdapted to Grinding Seeds, Grain, Mineral and Metallic Ores, and other Purposes; and I do hereby declare that the following is a full description of the same, reference being'made to the accompanying drawings and the letters of reference marked thereon, which form part of this specification.

The letters in all the figures refer to the same parts.

Figure 1 is a very good perspective view, of a complete working machine, constructed for, and used in, an oil mill, for grinding oleagino-us seeds, preparatory to pressing them. Fig. 2 is a plan of the grinding parts of the machine, the feeding apparatus being removed. Fig. 3 is a sectional elevation, at the line a b of Fig. 4. Fig. 4 is a side elevation. Fig. 5 is a sectional elevation of the grinding parts at the line a Z) of Fig. 4,

when fluted blocks are substituted for the rolls; a combination adapted to grinding liquids. Fig. 6 is a front elevation of one of the fluted blocks, showing the face which lies against wheel B.

A is a frame of iron.

B is a plain circular wheel, hung on the shaft as shown, and made to revolve by the belt L and pully D. This wheel, is turned off true and smooth, on both sides, and revolves between the rolls C C.The position of the rolls, is at right angles with the shaft on which wheel B is hung, and they are situated on a horiiontal line as shown, or may be placed on a Vertical line, or at any intervening angle. Or the wheel itself, may be horizontal, and the rolls arranged underneath and above it, though the arrangement shown, is believed to be the best. Motion is given to the rolls, by the bevel gearing as shown. They are turned oflt' true and smooth, and lay against the side of wheel B, so that any substance passing between them, is ground. The set screws F F F F are made to regulate the space between the rolls and wheel, so that the substance is ground more or less fine, as may be desired. The grinding surfaces of the rolls and wheel, are kept clean, when grinding any sticky substance, by the scrapers E E E E, which are fastened to the frame A by set screws,

through slotted holes the scraper, as

shown. i

G is a frame, which supports the feeders above. i

H is a hopper, which contains the substance to be ground, after it has passed through a wire screen, and separated from any large or hard substance, which would injure the machine. In the bottom of the hopper, two fluted rolls I I, are made to turn, by the gearing K, the flutes gathering the substance as the rolls turn, delivers it through funnels J J, in a thin, continuous, and uniform sheet, to the grinders below.

For grinding white lead in oil, and other liquids, this arrangement is very good, but in some cases, the fluted blocks M M, may be substituted for the rolls to very good advantage. The surface of block M neXt to wheel B, is fluted, as shown, the intervening ridges being planed off smooth. The liquid, on being fed in between the block and wheel, is carried over the ridges, and out below, of any requisite fineness, determined by the set screws F. This combination is in effect similar to that of Bogordus eccentric mill, while the grinding surfaces are more easily kept in order.

The wheel B working between rolls O O, as shown, gives a most eifective grinding motion, and the grinding surfaces are easily kept clean and in good order. If in this arrangement the grinding effect is found too great for any business, it may be diminished by making wheel B, wedging or V shaped, and the rolls conical to correspond, thus:

Or if a greater grinding eifect is desired for any purpose it may be attained by shaping the wheel and rolls in the following manner, to wit:

and the rim of wheel B may be made of solid iron or cored out hollow, as may be desired, leaving the sides true and smooth, so

as to secure a fair bearing for the rolls to act against. The Wheel may be Worked With one roll by having a friction roller bearing against the opposite side of the Wheel. Or, if found desirable for any purpose, two or more pairs of rolls may be Worked With one Wheel, by arranging them at diilerent angles around it.

In grinding large or hard substances, the machine may be made more eflective by making the Wheel B, of large diameter and having a heavy fiy-Wheel rim projecting beyond the ends of the rolls, so as to cause it to run strong and steady.

A high or loW speed may be given to the machine, as the business for which it is used may require. The one from which the drawings are made is run at a high speed, and is found to grind in a superior manner thirty bushels of seed per hour With three horse power.

The Wheel and rolls are made of fine cast iron, chilled or otherwise. Great strength and Width of bearing is given to the journals of the rolls.

By arranging on the sides of Wheel B, a series of knives, radiating from the center, and adapting the rolls or blocks to the purposes for Which the combination is made, a very efiective instrument is secured for cutting straw, shearing cloth, planing lumber, or for purposes analogous, the knives acting as rotary shears.

What I claim as my invention, and Wish to secure by Letters Patent, is

The combination of the revolving Wheel, With a roll, or rolls, or With a block or blocks, or their equivalents, arranged in any of the Ways, or for any of the purposes set forth.

D. L. LATOURETTE. Witnesses:

P. W; J oHNs'roNE, JOHN ODONNELL. 

